| /* |
| * Copyright (c) 2012 Stefano Sabatini |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * audio to video multimedia filter |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/parseutils.h" |
| #include "avfilter.h" |
| #include "filters.h" |
| #include "formats.h" |
| #include "audio.h" |
| #include "video.h" |
| #include "internal.h" |
| |
| enum ShowWavesMode { |
| MODE_POINT, |
| MODE_LINE, |
| MODE_P2P, |
| MODE_CENTERED_LINE, |
| MODE_NB, |
| }; |
| |
| enum ShowWavesScale { |
| SCALE_LIN, |
| SCALE_LOG, |
| SCALE_SQRT, |
| SCALE_CBRT, |
| SCALE_NB, |
| }; |
| |
| enum ShowWavesDrawMode { |
| DRAW_SCALE, |
| DRAW_FULL, |
| DRAW_NB, |
| }; |
| |
| enum ShowWavesFilterMode { |
| FILTER_AVERAGE, |
| FILTER_PEAK, |
| FILTER_NB, |
| }; |
| |
| struct frame_node { |
| AVFrame *frame; |
| struct frame_node *next; |
| }; |
| |
| typedef struct ShowWavesContext { |
| const AVClass *class; |
| int w, h; |
| AVRational rate; |
| char *colors; |
| int buf_idx; |
| int16_t *buf_idy; /* y coordinate of previous sample for each channel */ |
| AVFrame *outpicref; |
| int n; |
| int pixstep; |
| int sample_count_mod; |
| int mode; ///< ShowWavesMode |
| int scale; ///< ShowWavesScale |
| int draw_mode; ///< ShowWavesDrawMode |
| int split_channels; |
| int filter_mode; |
| uint8_t *fg; |
| |
| int (*get_h)(int16_t sample, int height); |
| void (*draw_sample)(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, const uint8_t color[4], int h); |
| |
| /* single picture */ |
| int single_pic; |
| struct frame_node *audio_frames; |
| struct frame_node *last_frame; |
| int64_t total_samples; |
| int64_t *sum; /* abs sum of the samples per channel */ |
| } ShowWavesContext; |
| |
| #define OFFSET(x) offsetof(ShowWavesContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption showwaves_options[] = { |
| { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS }, |
| { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS }, |
| { "mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, FLAGS, "mode"}, |
| { "point", "draw a point for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT}, .flags=FLAGS, .unit="mode"}, |
| { "line", "draw a line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE}, .flags=FLAGS, .unit="mode"}, |
| { "p2p", "draw a line between samples", 0, AV_OPT_TYPE_CONST, {.i64=MODE_P2P}, .flags=FLAGS, .unit="mode"}, |
| { "cline", "draw a centered line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CENTERED_LINE}, .flags=FLAGS, .unit="mode"}, |
| { "n", "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS }, |
| { "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS }, |
| { "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS }, |
| { "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS }, |
| { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS }, |
| { "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" }, |
| { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"}, |
| { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"}, |
| { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"}, |
| { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"}, |
| { "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" }, |
| { "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"}, |
| { "full", "draw every pixel for sample directly", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL}, .flags=FLAGS, .unit="draw"}, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(showwaves); |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| ShowWavesContext *showwaves = ctx->priv; |
| |
| av_frame_free(&showwaves->outpicref); |
| av_freep(&showwaves->buf_idy); |
| av_freep(&showwaves->fg); |
| |
| if (showwaves->single_pic) { |
| struct frame_node *node = showwaves->audio_frames; |
| while (node) { |
| struct frame_node *tmp = node; |
| |
| node = node->next; |
| av_frame_free(&tmp->frame); |
| av_freep(&tmp); |
| } |
| av_freep(&showwaves->sum); |
| showwaves->last_frame = NULL; |
| } |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| AVFilterFormats *formats = NULL; |
| AVFilterChannelLayouts *layouts = NULL; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }; |
| static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE }; |
| int ret; |
| |
| /* set input audio formats */ |
| formats = ff_make_format_list(sample_fmts); |
| if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0) |
| return ret; |
| |
| layouts = ff_all_channel_layouts(); |
| if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0) |
| return ret; |
| |
| formats = ff_all_samplerates(); |
| if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0) |
| return ret; |
| |
| /* set output video format */ |
| formats = ff_make_format_list(pix_fmts); |
| if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int get_lin_h(int16_t sample, int height) |
| { |
| return height/2 - av_rescale(sample, height/2, INT16_MAX); |
| } |
| |
| static int get_lin_h2(int16_t sample, int height) |
| { |
| return av_rescale(FFABS(sample), height, INT16_MAX); |
| } |
| |
| static int get_log_h(int16_t sample, int height) |
| { |
| return height/2 - FFSIGN(sample) * (log10(1 + FFABS(sample)) * (height/2) / log10(1 + INT16_MAX)); |
| } |
| |
| static int get_log_h2(int16_t sample, int height) |
| { |
| return log10(1 + FFABS(sample)) * height / log10(1 + INT16_MAX); |
| } |
| |
| static int get_sqrt_h(int16_t sample, int height) |
| { |
| return height/2 - FFSIGN(sample) * (sqrt(FFABS(sample)) * (height/2) / sqrt(INT16_MAX)); |
| } |
| |
| static int get_sqrt_h2(int16_t sample, int height) |
| { |
| return sqrt(FFABS(sample)) * height / sqrt(INT16_MAX); |
| } |
| |
| static int get_cbrt_h(int16_t sample, int height) |
| { |
| return height/2 - FFSIGN(sample) * (cbrt(FFABS(sample)) * (height/2) / cbrt(INT16_MAX)); |
| } |
| |
| static int get_cbrt_h2(int16_t sample, int height) |
| { |
| return cbrt(FFABS(sample)) * height / cbrt(INT16_MAX); |
| } |
| |
| static void draw_sample_point_rgba_scale(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| if (h >= 0 && h < height) { |
| buf[h * linesize + 0] += color[0]; |
| buf[h * linesize + 1] += color[1]; |
| buf[h * linesize + 2] += color[2]; |
| buf[h * linesize + 3] += color[3]; |
| } |
| } |
| |
| static void draw_sample_point_rgba_full(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| if (h >= 0 && h < height) { |
| buf[h * linesize + 0] = color[0]; |
| buf[h * linesize + 1] = color[1]; |
| buf[h * linesize + 2] = color[2]; |
| buf[h * linesize + 3] = color[3]; |
| } |
| } |
| |
| static void draw_sample_line_rgba_scale(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| int start = height/2; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start; k < end; k++) { |
| buf[k * linesize + 0] += color[0]; |
| buf[k * linesize + 1] += color[1]; |
| buf[k * linesize + 2] += color[2]; |
| buf[k * linesize + 3] += color[3]; |
| } |
| } |
| |
| static void draw_sample_line_rgba_full(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| int start = height/2; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start; k < end; k++) { |
| buf[k * linesize + 0] = color[0]; |
| buf[k * linesize + 1] = color[1]; |
| buf[k * linesize + 2] = color[2]; |
| buf[k * linesize + 3] = color[3]; |
| } |
| } |
| |
| static void draw_sample_p2p_rgba_scale(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| if (h >= 0 && h < height) { |
| buf[h * linesize + 0] += color[0]; |
| buf[h * linesize + 1] += color[1]; |
| buf[h * linesize + 2] += color[2]; |
| buf[h * linesize + 3] += color[3]; |
| if (*prev_y && h != *prev_y) { |
| int start = *prev_y; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start + 1; k < end; k++) { |
| buf[k * linesize + 0] += color[0]; |
| buf[k * linesize + 1] += color[1]; |
| buf[k * linesize + 2] += color[2]; |
| buf[k * linesize + 3] += color[3]; |
| } |
| } |
| } |
| *prev_y = h; |
| } |
| |
| static void draw_sample_p2p_rgba_full(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| if (h >= 0 && h < height) { |
| buf[h * linesize + 0] = color[0]; |
| buf[h * linesize + 1] = color[1]; |
| buf[h * linesize + 2] = color[2]; |
| buf[h * linesize + 3] = color[3]; |
| if (*prev_y && h != *prev_y) { |
| int start = *prev_y; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start + 1; k < end; k++) { |
| buf[k * linesize + 0] = color[0]; |
| buf[k * linesize + 1] = color[1]; |
| buf[k * linesize + 2] = color[2]; |
| buf[k * linesize + 3] = color[3]; |
| } |
| } |
| } |
| *prev_y = h; |
| } |
| |
| static void draw_sample_cline_rgba_scale(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| const int start = (height - h) / 2; |
| const int end = start + h; |
| for (k = start; k < end; k++) { |
| buf[k * linesize + 0] += color[0]; |
| buf[k * linesize + 1] += color[1]; |
| buf[k * linesize + 2] += color[2]; |
| buf[k * linesize + 3] += color[3]; |
| } |
| } |
| static void draw_sample_cline_rgba_full(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| const int start = (height - h) / 2; |
| const int end = start + h; |
| for (k = start; k < end; k++) { |
| buf[k * linesize + 0] = color[0]; |
| buf[k * linesize + 1] = color[1]; |
| buf[k * linesize + 2] = color[2]; |
| buf[k * linesize + 3] = color[3]; |
| } |
| } |
| |
| static void draw_sample_point_gray(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| if (h >= 0 && h < height) |
| buf[h * linesize] += color[0]; |
| } |
| |
| static void draw_sample_line_gray(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| int start = height/2; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start; k < end; k++) |
| buf[k * linesize] += color[0]; |
| } |
| |
| static void draw_sample_p2p_gray(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| if (h >= 0 && h < height) { |
| buf[h * linesize] += color[0]; |
| if (*prev_y && h != *prev_y) { |
| int start = *prev_y; |
| int end = av_clip(h, 0, height-1); |
| if (start > end) |
| FFSWAP(int16_t, start, end); |
| for (k = start + 1; k < end; k++) |
| buf[k * linesize] += color[0]; |
| } |
| } |
| *prev_y = h; |
| } |
| |
| static void draw_sample_cline_gray(uint8_t *buf, int height, int linesize, |
| int16_t *prev_y, |
| const uint8_t color[4], int h) |
| { |
| int k; |
| const int start = (height - h) / 2; |
| const int end = start + h; |
| for (k = start; k < end; k++) |
| buf[k * linesize] += color[0]; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| ShowWavesContext *showwaves = ctx->priv; |
| int nb_channels = inlink->channels; |
| char *colors, *saveptr = NULL; |
| uint8_t x; |
| int ch; |
| |
| if (showwaves->single_pic) |
| showwaves->n = 1; |
| |
| if (!showwaves->n) |
| showwaves->n = FFMAX(1, av_rescale_q(inlink->sample_rate, av_make_q(1, showwaves->w), showwaves->rate)); |
| |
| showwaves->buf_idx = 0; |
| if (!(showwaves->buf_idy = av_mallocz_array(nb_channels, sizeof(*showwaves->buf_idy)))) { |
| av_log(ctx, AV_LOG_ERROR, "Could not allocate showwaves buffer\n"); |
| return AVERROR(ENOMEM); |
| } |
| outlink->w = showwaves->w; |
| outlink->h = showwaves->h; |
| outlink->sample_aspect_ratio = (AVRational){1,1}; |
| |
| outlink->frame_rate = av_div_q((AVRational){inlink->sample_rate,showwaves->n}, |
| (AVRational){showwaves->w,1}); |
| |
| av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d r:%f n:%d\n", |
| showwaves->w, showwaves->h, av_q2d(outlink->frame_rate), showwaves->n); |
| |
| switch (outlink->format) { |
| case AV_PIX_FMT_GRAY8: |
| switch (showwaves->mode) { |
| case MODE_POINT: showwaves->draw_sample = draw_sample_point_gray; break; |
| case MODE_LINE: showwaves->draw_sample = draw_sample_line_gray; break; |
| case MODE_P2P: showwaves->draw_sample = draw_sample_p2p_gray; break; |
| case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline_gray; break; |
| default: |
| return AVERROR_BUG; |
| } |
| showwaves->pixstep = 1; |
| break; |
| case AV_PIX_FMT_RGBA: |
| switch (showwaves->mode) { |
| case MODE_POINT: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_point_rgba_scale : draw_sample_point_rgba_full; break; |
| case MODE_LINE: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_line_rgba_scale : draw_sample_line_rgba_full; break; |
| case MODE_P2P: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_p2p_rgba_scale : draw_sample_p2p_rgba_full; break; |
| case MODE_CENTERED_LINE: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_cline_rgba_scale : draw_sample_cline_rgba_full; break; |
| default: |
| return AVERROR_BUG; |
| } |
| showwaves->pixstep = 4; |
| break; |
| } |
| |
| switch (showwaves->scale) { |
| case SCALE_LIN: |
| switch (showwaves->mode) { |
| case MODE_POINT: |
| case MODE_LINE: |
| case MODE_P2P: showwaves->get_h = get_lin_h; break; |
| case MODE_CENTERED_LINE: showwaves->get_h = get_lin_h2; break; |
| default: |
| return AVERROR_BUG; |
| } |
| break; |
| case SCALE_LOG: |
| switch (showwaves->mode) { |
| case MODE_POINT: |
| case MODE_LINE: |
| case MODE_P2P: showwaves->get_h = get_log_h; break; |
| case MODE_CENTERED_LINE: showwaves->get_h = get_log_h2; break; |
| default: |
| return AVERROR_BUG; |
| } |
| break; |
| case SCALE_SQRT: |
| switch (showwaves->mode) { |
| case MODE_POINT: |
| case MODE_LINE: |
| case MODE_P2P: showwaves->get_h = get_sqrt_h; break; |
| case MODE_CENTERED_LINE: showwaves->get_h = get_sqrt_h2; break; |
| default: |
| return AVERROR_BUG; |
| } |
| break; |
| case SCALE_CBRT: |
| switch (showwaves->mode) { |
| case MODE_POINT: |
| case MODE_LINE: |
| case MODE_P2P: showwaves->get_h = get_cbrt_h; break; |
| case MODE_CENTERED_LINE: showwaves->get_h = get_cbrt_h2; break; |
| default: |
| return AVERROR_BUG; |
| } |
| break; |
| } |
| |
| showwaves->fg = av_malloc_array(nb_channels, 4 * sizeof(*showwaves->fg)); |
| if (!showwaves->fg) |
| return AVERROR(ENOMEM); |
| |
| colors = av_strdup(showwaves->colors); |
| if (!colors) |
| return AVERROR(ENOMEM); |
| |
| if (showwaves->draw_mode == DRAW_SCALE) { |
| /* multiplication factor, pre-computed to avoid in-loop divisions */ |
| x = 255 / ((showwaves->split_channels ? 1 : nb_channels) * showwaves->n); |
| } else { |
| x = 255; |
| } |
| if (outlink->format == AV_PIX_FMT_RGBA) { |
| uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff }; |
| |
| for (ch = 0; ch < nb_channels; ch++) { |
| char *color; |
| |
| color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr); |
| if (color) |
| av_parse_color(fg, color, -1, ctx); |
| showwaves->fg[4*ch + 0] = fg[0] * x / 255.; |
| showwaves->fg[4*ch + 1] = fg[1] * x / 255.; |
| showwaves->fg[4*ch + 2] = fg[2] * x / 255.; |
| showwaves->fg[4*ch + 3] = fg[3] * x / 255.; |
| } |
| } else { |
| for (ch = 0; ch < nb_channels; ch++) |
| showwaves->fg[4 * ch + 0] = x; |
| } |
| av_free(colors); |
| |
| return 0; |
| } |
| |
| inline static int push_frame(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| ShowWavesContext *showwaves = outlink->src->priv; |
| int nb_channels = inlink->channels; |
| int ret, i; |
| |
| ret = ff_filter_frame(outlink, showwaves->outpicref); |
| showwaves->outpicref = NULL; |
| showwaves->buf_idx = 0; |
| for (i = 0; i < nb_channels; i++) |
| showwaves->buf_idy[i] = 0; |
| return ret; |
| } |
| |
| static int push_single_pic(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| ShowWavesContext *showwaves = ctx->priv; |
| int64_t n = 0, column_max_samples = showwaves->total_samples / outlink->w; |
| int64_t remaining_samples = showwaves->total_samples - (column_max_samples * outlink->w); |
| int64_t last_column_samples = column_max_samples + remaining_samples; |
| AVFrame *out = showwaves->outpicref; |
| struct frame_node *node; |
| const int nb_channels = inlink->channels; |
| const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h; |
| const int linesize = out->linesize[0]; |
| const int pixstep = showwaves->pixstep; |
| int col = 0; |
| int64_t *sum = showwaves->sum; |
| |
| if (column_max_samples == 0) { |
| av_log(ctx, AV_LOG_ERROR, "Too few samples\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| av_log(ctx, AV_LOG_DEBUG, "Create frame averaging %"PRId64" samples per column\n", column_max_samples); |
| |
| memset(sum, 0, nb_channels); |
| |
| for (node = showwaves->audio_frames; node; node = node->next) { |
| int i; |
| const AVFrame *frame = node->frame; |
| const int16_t *p = (const int16_t *)frame->data[0]; |
| |
| for (i = 0; i < frame->nb_samples; i++) { |
| int64_t max_samples = col == outlink->w - 1 ? last_column_samples: column_max_samples; |
| int ch; |
| |
| switch (showwaves->filter_mode) { |
| case FILTER_AVERAGE: |
| for (ch = 0; ch < nb_channels; ch++) |
| sum[ch] += abs(p[ch + i*nb_channels]) << 1; |
| break; |
| case FILTER_PEAK: |
| for (ch = 0; ch < nb_channels; ch++) |
| sum[ch] = FFMAX(sum[ch], abs(p[ch + i*nb_channels])); |
| break; |
| } |
| |
| n++; |
| if (n == max_samples) { |
| for (ch = 0; ch < nb_channels; ch++) { |
| int16_t sample = sum[ch] / (showwaves->filter_mode == FILTER_AVERAGE ? max_samples : 1); |
| uint8_t *buf = out->data[0] + col * pixstep; |
| int h; |
| |
| if (showwaves->split_channels) |
| buf += ch*ch_height*linesize; |
| av_assert0(col < outlink->w); |
| h = showwaves->get_h(sample, ch_height); |
| showwaves->draw_sample(buf, ch_height, linesize, &showwaves->buf_idy[ch], &showwaves->fg[ch * 4], h); |
| sum[ch] = 0; |
| } |
| col++; |
| n = 0; |
| } |
| } |
| } |
| |
| return push_frame(outlink); |
| } |
| |
| |
| static int request_frame(AVFilterLink *outlink) |
| { |
| ShowWavesContext *showwaves = outlink->src->priv; |
| AVFilterLink *inlink = outlink->src->inputs[0]; |
| int ret; |
| |
| ret = ff_request_frame(inlink); |
| if (ret == AVERROR_EOF && showwaves->outpicref) { |
| if (showwaves->single_pic) |
| push_single_pic(outlink); |
| else |
| push_frame(outlink); |
| } |
| |
| return ret; |
| } |
| |
| static int alloc_out_frame(ShowWavesContext *showwaves, const int16_t *p, |
| const AVFilterLink *inlink, AVFilterLink *outlink, |
| const AVFrame *in) |
| { |
| if (!showwaves->outpicref) { |
| int j; |
| AVFrame *out = showwaves->outpicref = |
| ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| out->width = outlink->w; |
| out->height = outlink->h; |
| out->pts = in->pts + av_rescale_q((p - (int16_t *)in->data[0]) / inlink->channels, |
| av_make_q(1, inlink->sample_rate), |
| outlink->time_base); |
| for (j = 0; j < outlink->h; j++) |
| memset(out->data[0] + j*out->linesize[0], 0, outlink->w * showwaves->pixstep); |
| } |
| return 0; |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| ShowWavesContext *showwaves = ctx->priv; |
| |
| if (!strcmp(ctx->filter->name, "showwavespic")) { |
| showwaves->single_pic = 1; |
| showwaves->mode = MODE_CENTERED_LINE; |
| } |
| |
| return 0; |
| } |
| |
| #if CONFIG_SHOWWAVES_FILTER |
| |
| static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *insamples) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| ShowWavesContext *showwaves = ctx->priv; |
| const int nb_samples = insamples->nb_samples; |
| AVFrame *outpicref = showwaves->outpicref; |
| int16_t *p = (int16_t *)insamples->data[0]; |
| int nb_channels = inlink->channels; |
| int i, j, ret = 0; |
| const int pixstep = showwaves->pixstep; |
| const int n = showwaves->n; |
| const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h; |
| |
| /* draw data in the buffer */ |
| for (i = 0; i < nb_samples; i++) { |
| |
| ret = alloc_out_frame(showwaves, p, inlink, outlink, insamples); |
| if (ret < 0) |
| goto end; |
| outpicref = showwaves->outpicref; |
| |
| for (j = 0; j < nb_channels; j++) { |
| uint8_t *buf = outpicref->data[0] + showwaves->buf_idx * pixstep; |
| const int linesize = outpicref->linesize[0]; |
| int h; |
| |
| if (showwaves->split_channels) |
| buf += j*ch_height*linesize; |
| h = showwaves->get_h(*p++, ch_height); |
| showwaves->draw_sample(buf, ch_height, linesize, |
| &showwaves->buf_idy[j], &showwaves->fg[j * 4], h); |
| } |
| |
| showwaves->sample_count_mod++; |
| if (showwaves->sample_count_mod == n) { |
| showwaves->sample_count_mod = 0; |
| showwaves->buf_idx++; |
| } |
| if (showwaves->buf_idx == showwaves->w || |
| (ff_outlink_get_status(inlink) && i == nb_samples - 1)) |
| if ((ret = push_frame(outlink)) < 0) |
| break; |
| outpicref = showwaves->outpicref; |
| } |
| |
| end: |
| av_frame_free(&insamples); |
| return ret; |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| AVFilterLink *inlink = ctx->inputs[0]; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| ShowWavesContext *showwaves = ctx->priv; |
| AVFrame *in; |
| const int nb_samples = showwaves->n * outlink->w; |
| int ret; |
| |
| FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); |
| |
| ret = ff_inlink_consume_samples(inlink, nb_samples, nb_samples, &in); |
| if (ret < 0) |
| return ret; |
| if (ret > 0) |
| return showwaves_filter_frame(inlink, in); |
| |
| FF_FILTER_FORWARD_STATUS(inlink, outlink); |
| FF_FILTER_FORWARD_WANTED(outlink, inlink); |
| |
| return FFERROR_NOT_READY; |
| } |
| |
| static const AVFilterPad showwaves_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_AUDIO, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad showwaves_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_avf_showwaves = { |
| .name = "showwaves", |
| .description = NULL_IF_CONFIG_SMALL("Convert input audio to a video output."), |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .priv_size = sizeof(ShowWavesContext), |
| .inputs = showwaves_inputs, |
| .activate = activate, |
| .outputs = showwaves_outputs, |
| .priv_class = &showwaves_class, |
| }; |
| |
| #endif // CONFIG_SHOWWAVES_FILTER |
| |
| #if CONFIG_SHOWWAVESPIC_FILTER |
| |
| #define OFFSET(x) offsetof(ShowWavesContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption showwavespic_options[] = { |
| { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS }, |
| { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS }, |
| { "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS }, |
| { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS }, |
| { "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" }, |
| { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"}, |
| { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"}, |
| { "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"}, |
| { "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"}, |
| { "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" }, |
| { "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"}, |
| { "full", "draw every pixel for sample directly", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL}, .flags=FLAGS, .unit="draw"}, |
| { "filter", "set filter mode", OFFSET(filter_mode), AV_OPT_TYPE_INT, {.i64 = FILTER_AVERAGE}, 0, FILTER_NB-1, FLAGS, .unit="filter" }, |
| { "average", "use average samples", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_AVERAGE}, .flags=FLAGS, .unit="filter"}, |
| { "peak", "use peak samples", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_PEAK}, .flags=FLAGS, .unit="filter"}, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(showwavespic); |
| |
| static int showwavespic_config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| ShowWavesContext *showwaves = ctx->priv; |
| |
| if (showwaves->single_pic) { |
| showwaves->sum = av_mallocz_array(inlink->channels, sizeof(*showwaves->sum)); |
| if (!showwaves->sum) |
| return AVERROR(ENOMEM); |
| } |
| |
| return 0; |
| } |
| |
| static int showwavespic_filter_frame(AVFilterLink *inlink, AVFrame *insamples) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| ShowWavesContext *showwaves = ctx->priv; |
| int16_t *p = (int16_t *)insamples->data[0]; |
| int ret = 0; |
| |
| if (showwaves->single_pic) { |
| struct frame_node *f; |
| |
| ret = alloc_out_frame(showwaves, p, inlink, outlink, insamples); |
| if (ret < 0) |
| goto end; |
| |
| /* queue the audio frame */ |
| f = av_malloc(sizeof(*f)); |
| if (!f) { |
| ret = AVERROR(ENOMEM); |
| goto end; |
| } |
| f->frame = insamples; |
| f->next = NULL; |
| if (!showwaves->last_frame) { |
| showwaves->audio_frames = |
| showwaves->last_frame = f; |
| } else { |
| showwaves->last_frame->next = f; |
| showwaves->last_frame = f; |
| } |
| showwaves->total_samples += insamples->nb_samples; |
| |
| return 0; |
| } |
| |
| end: |
| av_frame_free(&insamples); |
| return ret; |
| } |
| |
| static const AVFilterPad showwavespic_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_AUDIO, |
| .config_props = showwavespic_config_input, |
| .filter_frame = showwavespic_filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad showwavespic_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| .request_frame = request_frame, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_avf_showwavespic = { |
| .name = "showwavespic", |
| .description = NULL_IF_CONFIG_SMALL("Convert input audio to a video output single picture."), |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .priv_size = sizeof(ShowWavesContext), |
| .inputs = showwavespic_inputs, |
| .outputs = showwavespic_outputs, |
| .priv_class = &showwavespic_class, |
| }; |
| |
| #endif // CONFIG_SHOWWAVESPIC_FILTER |
